CN202815647U - Controllable voltage stabilizing circuit for improving reliability of high-power vehicular radio station - Google Patents
Controllable voltage stabilizing circuit for improving reliability of high-power vehicular radio station Download PDFInfo
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- CN202815647U CN202815647U CN201220458537.9U CN201220458537U CN202815647U CN 202815647 U CN202815647 U CN 202815647U CN 201220458537 U CN201220458537 U CN 201220458537U CN 202815647 U CN202815647 U CN 202815647U
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Abstract
The utility model relates to field of radio transmission technologies and provides a controllable voltage stabilizing circuit for improving the reliability of a high-power vehicular radio station. The controllable voltage stabilizing circuit for improving the reliability of the high-power vehicular radio station has the advantages that the reliability and transmitting performance index of a whole radio-frequency (RF) transmitting circuit and a final-stage power tube of the high-power vehicular radio station are effectively improved, the cost of drive tube selection can be reduced, and the type selection is facilitated. According to the controllable voltage stabilizing circuit, RF signals generated by a pre-positioned pre-drive amplifier are fed into a drive amplifier for amplifying through a drive power coupling and impedance matching circuit, are output to a final-stage power amplifier for amplifying through a drive tube load matching circuit, and are then transmitted to an antenna terminal through a final-stage power amplifier output matching circuit, a VDD (Voltage Drain Drain) power supply is used for supplying power to the drive amplifier and the final-stage power amplifier, an APC (Automatic Power Control) control circuit is connected with the drive amplifier and the final-stage power amplifier respectively, the VDD power supply is fed to the drive amplifier after being subjected to voltage stabilization by an IC (Integrated Circuit) and filtering by an LC filter circuit, and a microprocessor is connected with the APC control circuit through a D/A (Digital to Analog) converter. With the adoption of the controllable voltage stabilizing circuit, the high-stability, high-reliability and high-quality power amplification of the final-stage power amplifier is realized.
Description
Technical field
The utility model relates to the wireless transmit technical field, particularly a kind of controlled mu balanced circuit that improves high power vehicular radio station reliability.
Background technology
Current, the high-power RF power amplification circuit, generally adopt discrete device to do multistage amplification, because the gain of single-stage power can not be accomplished very high, the performance index of whole power amplification link and not level power amplification and promote level very large directly related property is arranged, this two-stage all can't be done power supply control in traditional circuit, two-stage circuit all is that direct power supply is without the control power supply, the characteristic that promotes level is to the output power of level power amplification not, RF index and stability count for much, and traditional circuit generally adopts a high power, high withstand voltage, expensive promotion exciter tube; Two-stage is all directly controlled based on an APC control circuit in addition, but APC control is a hysteresis controller, just can make corresponding control after needing to detect feedback, APC is that a power standing wave detection circuit can not be made any control and response to power supply, although output power can be controlled in the scope when power supply fluctuates widely, but causing not to mains fluctuations, level promotion power Input matching can't respond fully, can cause so not level promotion power blasting when crossing high power supply voltage, level does not promote the power drive deficiency when crossing low supply voltage, cause not the power stage fluctuation of level power tube and level power tube work efficiency degradation not, seriously then can cause power tube to damage.
Summary of the invention
Therefore, for above-mentioned problem, the utility model proposes a kind of effective whole radio-frequency transmissions circuit that improves the high power vehicular radio station and not reliability and the emitting performance index of level power tube, and can reduce and promote choosing cost and being easy to the controlled mu balanced circuit of the raising high power vehicular radio station reliability of type selecting of pipe.
For solving this technical matters, the utility model is taked following scheme: a kind of controlled mu balanced circuit that improves high power vehicular radio station reliability, comprise the VDD power supply, preposition pre-driving amplifier, promote power mutual impedance match circuit, driving amplifier, promote the pipe load matching circuit, final power amplifier, the final power amplifier output matching circuit, antenna terminal and APC control circuit, the radiofrequency signal that described preposition pre-driving amplifier produces is sent into the driving amplifier amplification through promoting power mutual impedance match circuit, export the final power amplifier amplification to through promoting the pipe load matching circuit again, be sent to antenna terminal through the final power amplifier output matching circuit again, described VDD power supply provides power supply for driving amplifier and final power amplifier, described APC control circuit is connected with final power amplifier with driving amplifier respectively, also comprise voltage stabilizing IC circuit, the LC filtering circuit, D/A converter and microprocessor, described VDD power supply is through the voltage stabilizing of voltage stabilizing IC circuit, send into driving amplifier again after the filtering of LC filtering circuit, described microprocessor is connected with the APC control circuit through D/A converter.
Further, described voltage stabilizing IC circuit is the voltage stabilizing IC-U1 circuit with control end, and described LC filtering circuit is passive magnetic bead LC filtering circuit.
Further, described APC control circuit is made of power detection diode, heat conduction coupling circuit and APC automatic power controller.
Further, described antenna terminal is made of duplexer, low-pass filter and antenna.
By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: by to the high power vehicular radio station not the prime of level power amplification promote to amplify controlled stable voltage stabilizing be provided, making the promotion level amplify output not affected by the power supply wide fluctuations, be that the VDD power supply provides voltage stabilizing IC circuit and the not power supply supply of level power tube, the required power supply of driving amplifier is entered to driving amplifier by the ripple of LC filtering circuit filtering relevant interference after the voltage stabilizing of voltage stabilizing IC circuit, guarantee that its power supply supply is stable, can not cause that power stage is unstable because of power supply input fluctuation, thereby offer the stable promotion output power of final stage power amplifier, effectively reduced power-supply fluctuation and circuit ripple and caused that promoting the power variation causes final stage output power large-scope change, cause the power regulation that is above standard, and prevent to cause that the power tube blasting damages, or the output power communication distance that affects on the low side; Effectively promote the humorous wave mass of emission, and voltage stabilizing IC circuit has the protective effect of overcurrent, overheated shutoff, guaranteed that the indices such as the little and output emission harmonic wave of vehicle radio station output-power fluctuation in wide frequency range meets domestic and international standard.The use of mu balanced circuit of the present utility model makes not, and the level power amplification has realized high stability, high reliability, high-quality power amplification.
Description of drawings
Fig. 1 is the theory diagram of the utility model embodiment.
Embodiment
Now with embodiment the utility model is further specified by reference to the accompanying drawings.
With reference to figure 1, a kind of controlled mu balanced circuit that improves high power vehicular radio station reliability of the present utility model, comprise VDD power supply 1, preposition pre-driving amplifier 2, promote power mutual impedance match circuit 3, driving amplifier 4, promote pipe load matching circuit 5, final power amplifier 6, final power amplifier output matching circuit 7, antenna terminal 8, APC control circuit 9, voltage stabilizing IC circuit 10, LC filtering circuit 11, D/A converter 12 and microprocessor 13, the radiofrequency signal that described preposition pre-driving amplifier 2 produces is sent into driving amplifier 4 amplifications through promoting power mutual impedance match circuit 3, export final power amplifier 6 amplifications to through promoting pipe load matching circuit 5 again, be sent to antenna terminal 8 through final power amplifier output matching circuit 7 again, described VDD power supply 1 provides power supply for final power amplifier 6, described VDD power supply 1 is also through 10 voltage stabilizings of voltage stabilizing IC circuit, after 11 filtering of LC filtering circuit, send into driving amplifier 4 again, for providing stabilized power source, driving amplifier 4 supplies with, described APC control circuit 9 is connected with final power amplifier 6 with driving amplifier 4 respectively, described microprocessor 13 is connected with APC control circuit 9 through D/A converter 12, described voltage stabilizing IC circuit 10 is the voltage stabilizing IC-U1 circuit with control end, described LC filtering circuit 11 is passive magnetic bead LC filtering circuit, offers to promote the stable supply voltage of amplifying circuit; Described APC control circuit 9 is by power detection diode 91, heat conduction coupling circuit 92 and APC automatic power controller 93 consist of, the power that detects not level amplifier 6 outputs by power detection diode 91 and heat conduction coupling circuit 92 changes, and generate corresponding voltage, provide to APC automatic power controller 93 and signal from microprocessor 13 and compare through the reference voltage that D/A converter (being D/A) generates, obtain a result control driving amplifier 4 and stage power amplifier 6 not, described antenna terminal 8 is by duplexer 81, low-pass filter 82 and antenna 83 consist of.
The utility model by to the high power vehicular radio station not the prime of level power amplification promote to amplify controlled stable voltage stabilizing be provided, making the promotion level amplify output not affected by the power supply wide fluctuations, be that the VDD power supply provides voltage stabilizing IC circuit and the not power supply supply of level power tube, the required power supply of driving amplifier is entered to driving amplifier by the ripple of LC filtering circuit filtering relevant interference after the voltage stabilizing of voltage stabilizing IC circuit, guarantee that its power supply supply is stable, can not cause that power stage is unstable because of power supply input fluctuation, thereby offer the stable promotion output power of final stage power amplifier, effectively reduced power-supply fluctuation and circuit ripple and caused that promoting the power variation causes final stage output power large-scope change, cause the power regulation that is above standard, and prevent to cause that the power tube blasting damages, or the output power communication distance that affects on the low side; Effectively promote the humorous wave mass of emission, and voltage stabilizing IC circuit has the protective effect of overcurrent, overheated shutoff, guaranteed that the indices such as the little and output emission harmonic wave of vehicle radio station output-power fluctuation in wide frequency range meets domestic and international standard.The use of mu balanced circuit of the present utility model makes not, and the level power amplification has realized high stability, high reliability, high-quality power amplification.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (4)
1. controlled mu balanced circuit that improves high power vehicular radio station reliability, comprise the VDD power supply, preposition pre-driving amplifier, promote power mutual impedance match circuit, driving amplifier, promote the pipe load matching circuit, final power amplifier, the final power amplifier output matching circuit, antenna terminal and APC control circuit, the radiofrequency signal that described preposition pre-driving amplifier produces is sent into the driving amplifier amplification through promoting power mutual impedance match circuit, export the final power amplifier amplification to through promoting the pipe load matching circuit again, be sent to antenna terminal through the final power amplifier output matching circuit again, described VDD power supply provides power supply for driving amplifier and final power amplifier, described APC control circuit is connected with final power amplifier with driving amplifier respectively, it is characterized in that: also comprise voltage stabilizing IC circuit, the LC filtering circuit, D/A converter and microprocessor, described VDD power supply is through the voltage stabilizing of voltage stabilizing IC circuit, send into driving amplifier again after the filtering of LC filtering circuit, described microprocessor is connected with the APC control circuit through D/A converter.
2. the controlled mu balanced circuit of raising high power vehicular according to claim 1 radio station reliability, it is characterized in that: described voltage stabilizing IC circuit is the voltage stabilizing IC-U1 circuit with control end, described LC filtering circuit is passive magnetic bead LC filtering circuit.
3. the controlled mu balanced circuit of raising high power vehicular according to claim 1 radio station reliability, it is characterized in that: described APC control circuit is made of power detection diode, heat conduction coupling circuit and APC automatic power controller.
4. the controlled mu balanced circuit of raising high power vehicular according to claim 1 radio station reliability, it is characterized in that: described antenna terminal is made of duplexer, low-pass filter and antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220458537.9U CN202815647U (en) | 2012-09-10 | 2012-09-10 | Controllable voltage stabilizing circuit for improving reliability of high-power vehicular radio station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220458537.9U CN202815647U (en) | 2012-09-10 | 2012-09-10 | Controllable voltage stabilizing circuit for improving reliability of high-power vehicular radio station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202815647U true CN202815647U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220458537.9U Expired - Lifetime CN202815647U (en) | 2012-09-10 | 2012-09-10 | Controllable voltage stabilizing circuit for improving reliability of high-power vehicular radio station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202815647U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997304A (en) * | 2014-06-04 | 2014-08-20 | 泉州市琪祥电子科技有限公司 | Radio-frequency power amplifying circuit of high-power vehicle radio station |
| CN106785339A (en) * | 2016-12-29 | 2017-05-31 | 歌尔股份有限公司 | A kind of wearable device and its array signal processing circuit and method |
-
2012
- 2012-09-10 CN CN201220458537.9U patent/CN202815647U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103997304A (en) * | 2014-06-04 | 2014-08-20 | 泉州市琪祥电子科技有限公司 | Radio-frequency power amplifying circuit of high-power vehicle radio station |
| CN106785339A (en) * | 2016-12-29 | 2017-05-31 | 歌尔股份有限公司 | A kind of wearable device and its array signal processing circuit and method |
| CN106785339B (en) * | 2016-12-29 | 2023-11-24 | 歌尔股份有限公司 | Wearable device and antenna signal processing circuit and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |